Use a direct include of the message_loop header in remoting/.

remoting/protocol/connection_to_client_unittest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "remoting/protocol/connection_to_client.h"
 
 #include "base/bind.h"
-#include "base/message_loop.h"
+#include "base/message_loop/message_loop.h"
 #include "base/message_loop/message_loop_proxy.h"
 #include "remoting/base/constants.h"
 #include "remoting/protocol/fake_session.h"
 #include "remoting/protocol/protocol_mock_objects.h"
 #include "testing/gmock/include/gmock/gmock.h"
 
 using ::testing::_;
 using ::testing::NotNull;
 using ::testing::StrictMock;
 
@@ skipping 78 matching lines @@
   message_loop_.RunUntilIdle();
 
   EXPECT_CALL(handler_, OnConnectionClosed(viewer_.get(), SESSION_REJECTED));
   session_->set_error(SESSION_REJECTED);
   session_->event_handler()->OnSessionStateChange(Session::FAILED);
   message_loop_.RunUntilIdle();
 }
 
 }  // namespace protocol
 }  // namespace remoting